Ethanol production from various whole plants in solid-state fermentation model system. Ethanol production from (A) whole rice, (B) corn, and (C) wheat plants with the addition of 0.86 FPU/g DM ACS and 3.2 U/g DM glucoamylase (open circle), 0.86 FPU/g DM ACS and 0.32 U/g DM glucoamylase (black square), 0.086 FPU/g DM ACS and 0.32 U/g DM glucoamylase (open square), 0.86 FPU/g DM ACS (black triangle), 0.086 FPU/g DM ACS (open triangle), and without any enzyme addition (black circle). Values are expressed as the mean (SD) (n = 3). Values with different lowercase letters are significantly different (P < 0.05) as determined by an analysis of variance. ACS: cellulase from Acremonium cellulolyticus; DM: dry matter; FPU: filter paper unit.